BR112021024187A2 - Image encoding device, image decoding device, method and program - Google Patents

Image encoding device, image decoding device, method and program

Info

Publication number
BR112021024187A2
BR112021024187A2 BR112021024187A BR112021024187A BR112021024187A2 BR 112021024187 A2 BR112021024187 A2 BR 112021024187A2 BR 112021024187 A BR112021024187 A BR 112021024187A BR 112021024187 A BR112021024187 A BR 112021024187A BR 112021024187 A2 BR112021024187 A2 BR 112021024187A2
Authority
BR
Brazil
Prior art keywords
image
encoding
transformation
coefficients
components
Prior art date
Application number
BR112021024187A
Other languages
Portuguese (pt)
Inventor
Masato Shima
Original Assignee
Canon Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Kk filed Critical Canon Kk
Publication of BR112021024187A2 publication Critical patent/BR112021024187A2/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/127—Prioritisation of hardware or computational resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding

Abstract

dispositivo de codificação de imagem, dispositivo de decodificação de imagem, método e programa. a presente invenção refere-se à supressão da degradação da qualidade de imagem subjetiva enquanto se aprimora a eficiência de codificação de coeficientes residuais de dois componentes de croma. para o mesmo, um dispositivo de codificação de imagem que codifica dados de imagem constituídos por um componente de luma e dois componentes de croma, de acordo com a invenção, compreende meios de quantização que realizam uma transformação ortogonal em cada um dos componentes de um bloco obtido dividindo-se uma imagem a ser codificada e quantizam coeficientes de transformação de cada um dos componentes obtidos a partir da transformação ortogonal; e os meios de codificação que codificam coeficientes residuais obtidos a partir dos meios de quantização, em que, quando se codificam os coeficientes de transformação da transformação ortogonal dos dois componentes de croma de uma maneira integrada, os meios de codificação quantizam coeficientes de transformação da transformação ortogonal obtida a partir da integração com o uso de uma matriz de quantização predeterminada e codificam coeficientes residuais obtidos a partir da quantização.image encoding device, image decoding device, method and program. The present invention relates to suppressing subjective image quality degradation while improving the efficiency of encoding residual coefficients of two chroma components. for the same, an image encoding device that encodes image data consisting of a luma component and two chroma components, according to the invention, comprises quantization means that perform an orthogonal transformation on each of the components of a block obtained by dividing an image to be coded and quantizing transformation coefficients of each of the components obtained from the orthogonal transformation; and encoding means encoding residual coefficients obtained from the quantizing means, wherein, when encoding the transformation coefficients of the orthogonal transformation of the two chroma components in an integrated manner, the encoding means quantizing transformation coefficients of the transformation orthogonal obtained from the integration using a predetermined quantization matrix and encode residual coefficients obtained from the quantization.

BR112021024187A 2019-06-07 2020-04-02 Image encoding device, image decoding device, method and program BR112021024187A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019107454A JP2020202473A (en) 2019-06-07 2019-06-07 Image encoder and image decoder and method and program
PCT/JP2020/015216 WO2020246125A1 (en) 2019-06-07 2020-04-02 Image coding device, image decoding device, method, and program

Publications (1)

Publication Number Publication Date
BR112021024187A2 true BR112021024187A2 (en) 2022-01-11

Family

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Application Number Title Priority Date Filing Date
BR112021024187A BR112021024187A2 (en) 2019-06-07 2020-04-02 Image encoding device, image decoding device, method and program

Country Status (8)

Country Link
US (6) US11856198B2 (en)
EP (1) EP3982632A4 (en)
JP (2) JP2020202473A (en)
KR (1) KR20220011175A (en)
CN (1) CN113994677A (en)
BR (1) BR112021024187A2 (en)
TW (1) TW202101990A (en)
WO (1) WO2020246125A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11641469B2 (en) * 2020-01-13 2023-05-02 Qualcomm Incorporated Signaling scaling matrices in video coding

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5026092B2 (en) * 2007-01-12 2012-09-12 三菱電機株式会社 Moving picture decoding apparatus and moving picture decoding method
JPWO2010070897A1 (en) * 2008-12-16 2012-05-24 パナソニック株式会社 Moving picture coding method, moving picture decoding method, moving picture coding apparatus, moving picture decoding apparatus, program, and integrated circuit
EP2495973B1 (en) * 2009-10-30 2019-02-27 Sun Patent Trust Decoding method, decoder apparatus, encoding method, and encoder apparatus
CN102164284A (en) * 2010-02-24 2011-08-24 富士通株式会社 Video decoding method and system
JP2011259205A (en) * 2010-06-09 2011-12-22 Sony Corp Image decoding device, image encoding device, and method and program thereof
JP2013038758A (en) 2011-07-13 2013-02-21 Canon Inc Image encoder, image encoding method, program, image decoder, image decoding method and program
JP6210368B2 (en) * 2012-09-18 2017-10-11 サン パテント トラスト Image decoding method and image decoding apparatus
CN107360419B (en) * 2017-07-18 2019-09-24 成都图必优科技有限公司 A kind of movement forward sight video interprediction encoding method based on perspective model
JP6644865B2 (en) 2018-12-28 2020-02-12 日本光電工業株式会社 Medical systems

Also Published As

Publication number Publication date
US20240089439A1 (en) 2024-03-14
EP3982632A1 (en) 2022-04-13
US20220094937A1 (en) 2022-03-24
WO2020246125A1 (en) 2020-12-10
US20240089443A1 (en) 2024-03-14
TW202101990A (en) 2021-01-01
US11856198B2 (en) 2023-12-26
US20240089441A1 (en) 2024-03-14
JP2020202473A (en) 2020-12-17
US20240089440A1 (en) 2024-03-14
KR20220011175A (en) 2022-01-27
EP3982632A4 (en) 2023-05-03
US20240089442A1 (en) 2024-03-14
JP2024015184A (en) 2024-02-01
CN113994677A (en) 2022-01-28

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